Conversion Between BitString and String

/*============================================================================
 Name        : Exercise.cpp
 Author      : Haier
 Version     : 1.01
 Copyright   : Copyright (c) 2014
 Description : wchar_t Conver program in C, Ansi-style, Compile by Code:Block
 ============================================================================*/
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>

wchar_t * bitstr_to_str(wchar_t *buf)
{
	int i=0, j=0;
	int bitpos=0;
	int bits[8] = { 128, 64, 32, 16, 8, 4, 2, 1 };
	wchar_t *out = (wchar_t *)calloc(80, sizeof(wchar_t));
	while(buf[i])
	{
		switch (buf[i])
		{
		case '1':
		case '0':
			out[j] += atoi((const char *)&buf[i])*bits[bitpos];
			bitpos++;
			if (8==bitpos)
			{
				bitpos = 0;
				j++;
			}
			break;
		default:
			break;
		}
		i++;
	}
	out[j+1]='\0';
	return out;
}

char *StrToBit(wchar_t *Buf)
{
    char *OutString=(char*)malloc(9*80*sizeof(char));
    int   Bit[8]   ={128,64,32,16,8,4,2,1};
    int i,j,Temp;

    for(i=0; Buf[i]; i++)
    {
        Temp=(int)Buf[i];

        for(j=0; j<8; j++)
        {
            if(Temp-Bit[j]>0)
            {
                OutString[j+i*9]='1';
                Temp-=Bit[j];
            }
            else
            {
                OutString[j+i*9]='0';
            }
        }
        OutString[8+i*9]=' ';
    }

    OutString[i*9]='\0';
    return OutString;
}

int main()
{
    wchar_t *Buffer=L"Hello";
    
    printf("%ls\n",StrToBit(Buffer));
    printf("%ls\n",bitstr_to_str(Buffer));
}